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Finding the Fourth Proportional to 482,493.88, 665,828.71 and 278,537.91

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Solution

The fourth proportional to 482,493.88, 665,828.71 and 278,537.91 is: 384,374.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,493.88 : 665,828.71 = 278,537.91 : x
  2. Step 2: Convert to fraction form
    482,493.88/665,828.71 = 278,537.91/x
  3. Step 3: Cross multiply
    482,493.88x = 665,828.71 × 278,537.91
  4. Step 4: Simplify right side
    482,493.88x = 185,458,534,108.19
  5. Step 5: Solve for x
    x = 185,458,534,108.19/482,493.88
  6. Step 6: Final answer
    x = 384,374.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.